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Natural Untreated Gemstones

Discover genuine untreated gemstones selected for natural beauty, rarity, and authenticity.

Natural Untreated Gemstones Weight
Natural Untreated Gemstones Size
Natural Untreated Gemstones Clarity
Natural Untreated Gemstones Price
Natural Untreated Gemstones Treatment

Size Explained

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For Example: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
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Green Natural Untreated Gemstones
Multicolor Natural Untreated Gemstones
Orange Natural Untreated Gemstones
Pink Natural Untreated Gemstones
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Yellow Natural Untreated Gemstones
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0.62Ct Berry Purple Spinel, Oval, Vs

0.62Ct Berry Purple Spinel, Oval, Vs

6 x 4 mm (calibrated)

$ 62.00

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1.22Ct Pinkish Purple Spinel, Cushion, Vs
Spinel Product Video (719710)

1.22Ct Pinkish Purple Spinel, Cushion, Vs

6.1 x 5.7 mm

$ 244.00

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2.20Ctw Multicolor Andalusite, Pear Shape, Vs

2.20Ctw Multicolor Andalusite, Pear Shape, Vs

5 x 3 mm (calibrated)

$ 141.60

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0.07Ct Very Light Yellow Green Alexandrite, Oval, Vs-Si

0.07Ct Very Light Yellow Green Alexandrite, Oval, Vs-Si

3.5 x 2.5 mm

$ 58.80

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0.66Ct Light Earthy Yellow Beryl, Pear Shape, Vvs-Vs

0.66Ct Light Earthy Yellow Beryl, Pear Shape, Vvs-Vs

7 x 5 mm (calibrated)

$ 15.84

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2.90Ct Rose Pink Morganite, Round, Transparent

2.90Ct Rose Pink Morganite, Round, Transparent

9 mm (calibrated)

$ 37.90

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3.88Ct White Topaz, Round, Vs
Topaz Product Video (390984)

3.88Ct White Topaz, Round, Vs

9 mm (calibrated)

$ 29.88

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14.04Ctw Black Spinel, Heart, Opaque

14.04Ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 92.66

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3.69Ct White Topaz, Heart, Vvs-Vs

3.69Ct White Topaz, Heart, Vvs-Vs

10 x 10 mm (calibrated)

$ 36.90

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1.15Ct Medium Purple Spinel, Cushion, Vs

1.15Ct Medium Purple Spinel, Cushion, Vs

6.3 x 5.9 mm

$ 97.63

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5.50Ct White Topaz, Round, Vvs

5.50Ct White Topaz, Round, Vvs

10 mm (calibrated)

$ 36.30

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0.62Ct Light Gold Beryl, Oval, Vvs-Vs

0.62Ct Light Gold Beryl, Oval, Vvs-Vs

7 x 5 mm (calibrated)

$ 18.60

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4.26Ct Light Pink Morganite, Pear Shape, Transparent

4.26Ct Light Pink Morganite, Pear Shape, Transparent

16 x 8 mm (calibrated)

$ 56.23

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0.98Ct Medium Purple Spinel, Cushion, Vs

0.98Ct Medium Purple Spinel, Cushion, Vs

6.2 x 5 mm

$ 83.21

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1.07Ct Light Yellow Beryl, Oval, Vvs-Vs

1.07Ct Light Yellow Beryl, Oval, Vvs-Vs

8 x 6 mm (calibrated)

$ 25.68

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14.10Ctw Black Spinel, Round, Opaque

14.10Ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 52.85

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1.73Ctw Light Orange Morganite, Oval, Vs

1.73Ctw Light Orange Morganite, Oval, Vs

8 x 6 mm (calibrated)

$ 114.18

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0.12Ct Black Diamond, Round, Opaque

0.12Ct Black Diamond, Round, Opaque

3 mm (calibrated)

$ 49.49

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0.95Ct Light Golden Morganite, Pear Shape, Vs

0.95Ct Light Golden Morganite, Pear Shape, Vs

8 x 6 mm (calibrated)

$ 50.16

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0.03Ct Black Diamond, Round, Opaque

0.03Ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 28.80

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0.68Ct Medium Green Cat's Eye Alexandrite, Oval, Opaque

0.68Ct Medium Green Cat's Eye Alexandrite, Oval, Opaque

5.5 x 4 mm

$ 170.00

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0.21Ct Medium Light Brown Color-Change Sapphire, Fancy, Vvs

0.21Ct Medium Light Brown Color-Change Sapphire, Fancy, Vvs

6 x 3.3 mm

$ 21.00

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3.01Ct White Topaz, Oval, Vvs-Vs

3.01Ct White Topaz, Oval, Vvs-Vs

10 x 8 mm (calibrated)

$ 19.87

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1.18Ct Medium Dark-Purple Spinel, Cushion, Vs

1.18Ct Medium Dark-Purple Spinel, Cushion, Vs

6.4 x 5.5 mm

$ 141.60

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Why Buy Natural Untreated Gemstones from GemSelect?

Why Choose Untreated Gemstones?

Untreated gemstones are valued for their natural color and clarity without artificial enhancement. Many buyers prefer these gems for authenticity, rarity, and long-term value.

Natural Loose Untreated Gems Online

Shop loose untreated gemstones online at GemSelect with confidence. Browse sapphires, rubies, spinels, aquamarine, garnet, tourmaline, and more with full disclosure.

Natural Untreated Gemstones for Jewelry and Collecting

Untreated Gemstones for Jewelry

Natural untreated gems are excellent for rings, earrings, pendants, and custom jewelry. Their original beauty makes every piece unique and meaningful.

Popular Untreated Gemstone Types

Popular choices include untreated sapphire, ruby, spinel, garnet, tourmaline, zircon, aquamarine, and many collector stones in a wide range of colors.

Certified Natural Gemstones

Many buyers choose untreated gemstones with gemological reports for added confidence. Certification can confirm identity and indicate whether treatments are present.

Collector Quality Untreated Gems

Collectors appreciate untreated gemstones because naturally fine examples are rarer than treated material. These stones can be especially desirable when color and clarity are strong.

Calibrated Untreated Gemstones

We also offer calibrated untreated gemstones in popular sizes suitable for standard jewelry settings, making custom designs easier and faster.

Worldwide Shipping from GemSelect

GemSelect offers secure online ordering, detailed product images, and worldwide delivery so you can shop untreated gemstones from anywhere.

Learn more about gemstone treatments, identification, and care on our Gemstone Information Pages.

FAQs

What does untreated gemstone mean?

An untreated gemstone has not undergone enhancement processes such as heating, dyeing, filling, coating, or diffusion to improve appearance.

Are untreated gemstones more valuable?

Often yes, especially in sapphire, ruby, and other premium gems where fine untreated stones are rarer than treated examples.

How can I verify a gemstone is untreated?

Independent laboratory certification is the best way to verify whether a gemstone is natural and untreated.

Which gemstones are commonly sold untreated?

Spinel, garnet, zircon, tourmaline, aquamarine, and some sapphires or rubies are often available untreated depending on source and quality.

Are all untreated gemstones natural?

Natural untreated gemstones are mined stones that have not been enhanced after cutting. Always buy from trusted sellers with clear disclosure.

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 9 star ratings

I was looking for a small gift for a friend- the process is the same as every other time and was very simple, and she even got her gift early! On the downside, there's no way to easily keep track of multiple Shipping Addresses, so if I want to send a gift to Friend A and to Friend B, I have to overwrite everything and it's a fair bit clunky in that regard.

Posted By Jezzi in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I purchased from you before and I have never been disappointed. I always received what I expected and your products are very nice.

Posted By MVK in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Very easy to navigate with a great selection.

Posted By Bar181 in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good

Posted By Niska in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

good navigation and simple interface.

Posted By Dave in April, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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